Lathing for stucco



Oct. 8, 1929. v G. E. SWENSON LATHING FOR STUCCO Filed Feb. 4, 1924 INVENTOR Geo/ye f. Swanson Patented Oct. 8, 1929 UNITED STATES GEORGE E. SWENSON, OF HASTINGS-ON-HUDSON, NEW YORK, ASSIGNOR TO THE BAR- PATENT OFFICE RETT COMPANY, A CORPORATION OF NEW JERSEY LATHIN G FOR STUCCO Application filed February 4, 1924. Serial No. 690,395.

This invention relates to applying stucco to buildings and the like and to the preparation of means for retaining the stucco in such a manner as to minimize the danger of its peeling or falling off.

I-Ieretofore it has been proposed to take waterproof fibrous material, such as sheets made of paper-making material, waterproofed by means of waterproofing liquids,

one surface of which was coated with pitchy material to which granular mineral particles were applied, and to fasten these sheets as by nailing to the sheathing with the granular mineral outside and then to apply a thin layer of stucca on the sheet. In using this method of applying the stucco it has been found that there is danger of the stucco becoming cracked after it has hardened due to expansion and contraction of the sheathing and warping of the same.

By the present invention this difliculty is overcome and the ordinary sheathing may be entirely dispensed with, if desired. In cases where the sheathing is used its tendency to crack he stucco is overcome in large measure and at the same time an insulating layer of air is provided in the wall without weakening the structure.

The invention will be understood from the description in connection with the accompanying drawings, in which Fig. 1 is a plan View of the sheets to be used;

Fig. 2 is a section along the line 22 of Fig. 1. p

In the drawings reference character 1 indicates a sheet of fibrous material such as paper, for example, which has been saturated with waterproofing material as may be done by passing the same through a bath of waterproofing material such as tar. A thin layer 2 of cementitious material such as pitch or asphalt, commonly known as seal back in this art, is applied to one side of the waterproofed sheet 1 and a layer 3 of plastic bituminous material such as pitch or asphalt is coated upon the other side of the saturated sheet 1 and a layer 4 of granular mineral material such as crushed stone, grit or slate is applied, to the coating 3. It is preferable to use crushed slate for this purpose for the reason pointed out below. Slats 5, which may be ordinary wood laths, are applied to the cementitious layer 2 by pressing them thereagainst, This may be done in any convenient manner.

The article prepared as above described may be attached to the upright studding 6 by driving nails through the layers 1, 2, 3, 4 and laths 5 into the studding 6 as shown at 7 at as many points as may be found to be necessary;

Instead of applying the article directly to the studding 6 as just described, ordinary sheathing boards may be first nailed to the studding 6 in the usual manner and the article may be nailed to the sheathing itself instead of the studding. After the article is installed by attaching it to the sheathing or studding, a coating of stucco 8 is applied to the outside surface and due to the small particles of mineral matter 1, the stucco enters into the small interstices between the mineral granules and is thereby firmly retained in place.

It has been found that when this mineral material 4 is made of crushed slate its porosity will greatly aid in retaining the stucco in place as the stucco becomes firmly bound thereto and adheres tenaciously.

The article comprising the layers 1, 2, 3 and 4 may be made in any of the usual manners well known in this art. The slats or laths 5 may be applied to the coating 2.

The article described above may be used in applying stucco to the outside of a building or it may be used as a base for applying plaster on the inside walls of buildings. desired, marks or indicia may be placed at suitable intervals upon the stone surfaced side of the sheets before they are fastened to the studding or sheathing for the purpose of locating the exact position of the slats 5 on the back thereof in order to facilitate driving the nails therethrough into the studding or sheathing.

I claim:

1. As a new article of manufacture, a sheet of fibrous material saturated with a waterproofing composition, a coating of plastic waterproofin material on one side of said sheet, ranul ar mineral surfacing material partial y embedded in said plastic waterproofing material a coating of bituminous Waterproofing material on the other side of said sheet and slats applied to said other side of said sheet by means of said coating of bituminous material.

2. As a new article of manufacture, a sheet of fibrous material saturated With a Waterproofing composition, a coating of plastic Waterproofing material on one side of said sheet crushed slate surfacing material partially embedded in said plastic Waterproofing material and slats applied to the other side of said sheet by means of bituminous Waterproofing material.

In testimony whereof I afiix my signature.

GEORGE E. SWENSON. 

